{"created":"2021-03-01T06:14:07.905878+00:00","id":11241,"links":{},"metadata":{"_buckets":{"deposit":"25f882dc-ac1d-4281-a994-5647edd403b1"},"_deposit":{"id":"11241","owners":[],"pid":{"revision_id":0,"type":"depid","value":"11241"},"status":"published"},"_oai":{"id":"oai:soar-ir.repo.nii.ac.jp:00011241","sets":["1016:1018:1103:1119"]},"author_link":["35121","35122"],"control_number":"11241","item_10_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1986-10-15","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"164","bibliographicPageStart":"143","bibliographicVolumeNumber":"23","bibliographic_titles":[{"bibliographic_title":"信州大学農学部演習林報告"}]}]},"item_10_description_20":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"According to the past forest hydrologic studies, the functions of forest on streamflow are to level off streamfiow with somewhat decreases in total amount of flow. It is the purpose of this paper to make clear the relationships between leveling in stream regime and clear cutting, terrace planting and advancement of forest age using the ratio of annual maximum daily runoff to annual minimum daily runoff as a index on stream regime following the coefficient of river regime, with hydrologic data over 40 to 45 years observed at two experimental watersheds, namely Kamabuchi No. 1 and No. 2 watersheds at Yamagata Experiment Site, the National Forestry and Forest Products Research Instiute. Now, on the No. 1 watershed (3.06 ha), about 30 years old mixed forest of coniferous and broad leaved species had grown continuously over 45 years, with absolutely nothing done by human works. In the period, the volume of stand increased from about 60 m3 per hectare to about 320 m3 per hectare and the structural ratio of deciduous broad leaved tree had risen higher than that of evergreen coniferous trees. And, on the No. 2 watershed (2.48 ha), the same mixed forest had been cut clearly 9 years later, after that the regrowth on the cut-over area had been controled by weeding and burning over 11 years, furtfermore 21 years later the terracing had been cut in order to prevent snowslide and evergreen coniferous trees were planted on the terracing. With the changes in surface vegetative cover as aforesaid, the ratio for No. 1 watershed decreased in each value and the amount of scatter of them with year elapsed, namely advanced the leveling in stream regime. This tendency was caused by decreasing trend of annual maximum daily runoff and, on the contrary, increasing trend in annual minimum daily runoff. And then, it has been definitely shown by separate studies that evapotranspiration over same period annually decreased and the condition of precipitation bore no relation to the long-term trend of the ratio. Next, the ratio for No. 2 watershed also decreased in each value and the amount of scatter of them by stages coinciding with young-aged forest period, clear-cutting-weeding-burning period and terrace planting period and namely leveling in stream regime advanced by stages. This tendency was caused by the increase of annual minimum daily runoff by stages with the removal of vegetative cover and the decrease of annual maximum daily runoff after terracing. As aforesaid, it was cleared that the annual evapotranspiration decreased by stages coinciding with the changes in vegetative cover and the condition of precipitation had nothing to do with the ratio's trend. Tte decrease in the ratio, namely the leveling in stream flow was brought with both the removal of forest vegetation and the advancement of forest age. Forest cutting has, however, the possibility for increase of direct runoff at the time of heavy rain and, what is worse, the amount of decrease in evapotranspiration was not so much. In consequence, the leveling in stream flow will be made more progress with advancement of forest age that, at the same time, will probably improve the infiltration and water holding capacities in forest land. It has been known that high-aged forest is very important for water conservation as well as for the national land conservation, forest management and so on, besides, that forest cutting in little-rain area is significant from the viewpoint on water supply, if the methods of logging are carefully selected.","subitem_description_type":"Abstract"}]},"item_10_description_30":{"attribute_name":"資源タイプ（コンテンツの種類）","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_type":"Other"}]},"item_10_description_5":{"attribute_name":"引用","attribute_value_mlt":[{"subitem_description":"信州大学農学部演習林報告 23: 143-164(1986)","subitem_description_type":"Other"}]},"item_10_publisher_4":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"信州大学農学部附属演習林"}]},"item_10_source_id_35":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0559-8613","subitem_source_identifier_type":"ISSN"}]},"item_10_source_id_40":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00121330","subitem_source_identifier_type":"NCID"}]},"item_1627890569677":{"attribute_name":"出版タイプ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"中野,  秀章"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山村,  烈也"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2015-09-25"}],"displaytype":"detail","filename":"Agri_Forests-23-04.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"Agri_Forests-23-04.pdf","url":"https://soar-ir.repo.nii.ac.jp/record/11241/files/Agri_Forests-23-04.pdf"},"version_id":"88c4dfb6-99be-42d2-810c-e2ce3245ffa3"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"森林の伐採及び階段工施工と流況の長期傾向","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"森林の伐採及び階段工施工と流況の長期傾向","subitem_title_language":"ja"},{"subitem_title":"Long-term Trends in Stream Regime consequent upon the Forest Cutting and Terracing","subitem_title_language":"en"}]},"item_type_id":"10","owner":"1","path":["1119"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2012-03-07"},"publish_date":"2012-03-07","publish_status":"0","recid":"11241","relation_version_is_last":true,"title":["森林の伐採及び階段工施工と流況の長期傾向"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-12-14T03:59:15.605839+00:00"}